Wire-sensing means



Decl 1966 R. K. GREBE ETAL 3,289,445

WIRESENSING MEANS F11ed Nov. 21 1963 2 Sheets-Sheet 1

1. IN A PRESS HAVING UPPER AND LOWER DIE PARTS FOR OPERATING ON AWORKPIECE THEREBETWEEN, OPERATING MEANS TO CAUSE THE DIE PARTS TO PRESSTHE METAL PART, ELECTRICAL CIRCUIT MEANS CONNECTED TO SAID OPERATINGMEANS INCLUDING SWITCHING MEANS, AND CONTROL CIRCUIT MEANS CONNECTED TOSAID ELECTRICAL CIRCUIT MEANS INCLUDING TACTILE SENSING MEANS, SAIDCONTROL CIRCUIT MEANS HAVING A FIRST STATE AND A SECOND STATE, ANDCONTROL CIRCUIT MEANS BEING OPERATED FROM SAID FIRST STATE TO SAIDSECOND STATE UPON NONCONDUCTIVE ENGAGEMENT OF SAID WORKPIECE WITH SAIDTACTILE SENSING MEANS TO OPERATE SAID SWITCHING MEANS TO OPERATE THEPRESS.